AI Tool Atlas

Research & searchDocumented overviewLast checked Oct 1, 2026

Newsletrix: Pricing, Features & Best Use Cases

Newsletter analytics and AI competitor intelligence for newsletter creators.

Newsletrix homepage screenshot, research & search AI tool

Our take: Newsletrix suits newsletter creators and email marketers who want to track competitor sends, subject-line patterns and best send times, with a free plan that allows 2 analyses per week.

Main limitation: The free plan allows only 2 analyses per week and one tracking email.

By the AI Tool Atlas editors. Based on the vendor's official documentation; we have not tested this product hands-on. What “documented overview” means

Who Newsletrix fits

Newsletrix suits newsletter creators and email marketers who want to track competitor sends, subject-line patterns and best send times, with a free plan that allows 2 analyses per week. Based on the vendor's documentation, not on a hands-on test.

Best for: Newsletter creators

Also a good fit for

  • Email marketers

Consider another tool if free plan limited to 2 analyses per week

Or if

  • One tracking email on the free plan
  • Higher tiers needed for more analyses

Newsletrix pricing and usage limits

Prices checked Oct 1, 2026 on the official US pricing page. Official pricing ↗ Prices and limits change often.

Free access and trial conditions

Free plan forever, 2 analyses/week.

None beyond Free.

Paid plans: what changes as you upgrade

Starter web

$9/mo source (opens in a new tab)

Month

For: Solo creators

Limits

  • More analyses per week (number not captured)

Includes

  • All features

Usage caps, credits and extra costs

Not stated.

Not stated.

What is Newsletrix, and how does it work?

Newsletrix analyzes competitor newsletters and presents AI summaries, subject-line scoring, send-time heatmaps and a campaign calendar. It says it works with newsletters from Substack, Beehiiv, Mailchimp, Klaviyo and others. Plans are based on the number of analyses per week, and every plan is stated to include all features.

Newsletrix homepage — screenshot of the research & search AI tool, Oct 2, 2026
Newsletrix's official site: how the product presents itself. newsletrix.com, captured Oct 2, 2026

What you provide and what you get back

How Newsletrix works: what you provide, where it runs and what you get backYOU PROVIDEYour inputCompetitor newsletter subscriptio…Natural-language filter queriesRESEARCH & SEARCHNewsletrixWebfrom $9/mo (Starter)free tier availableaccount requiredchecked Oct 1, 2026YOU GET BACKThe resultAI competitor summariesSubject line scores and benchmarksSend-time heatmaps and a campaign…input → Newsletrix → output · from the vendor's own pages, no hands-on test unless stated
What you give Newsletrix and what comes back, from its documentation

You provide

  • Competitor newsletter subscriptions via a tracking email
  • Natural-language filter queries

You get back

  • AI competitor summaries
  • Subject line scores and benchmarks
  • Send-time heatmaps and a campaign calendar

Where you can use it

Platforms
Web
Account
Required
Modules
Competitor summary, filter assistant, subject scoring, heatmap, calendar
Free limits
2 analyses/week, 1 tracking email
Supported senders
Substack, Beehiiv, Mailchimp, ConvertKit, Klaviyo, SendGrid, HubSpot

What people use Newsletrix for

Scenarios are worked out by our editors from the documentation; the actual result depends on your input and plan.

Competitor newsletter tracking

Who
Newsletter creators and email marketers
You provide
Competitor newsletters from Substack, Beehiiv, Mailchimp, Klaviyo and others
Expected result
Weekly summary of discount campaigns, top send slots and subject trends
Plan needed
Free to start
Limitation
Free tracks one email and 2 analyses/week source (opens in a new tab)

Subject line analysis

Who
Copywriters
You provide
Subjects across tracked brands
Expected result
Each subject scored for length, emoji, uppercase, sentiment and keywords against estimated open rates
Plan needed
Any plan
Limitation
Open rates are estimates source (opens in a new tab)

Finding best send times

Who
Growth leads
You provide
Hour-by-day send history
Expected result
Heatmap of peak slots such as Tuesday 9 AM to schedule your own sends
Plan needed
Any plan
Limitation
Based on tracked competitors only source (opens in a new tab)

What Newsletrix does, and where it stops

Newsletrix homepage — screenshot of the research & search AI tool, Oct 2, 2026
Feature overview on the official site. newsletrix.com, captured Oct 2, 2026

AI competitor summary

Summarizes what tracked competitors did across the week Replaces reading dozens of inboxes

Access: All plansLimit: Analysis count capped per week source (opens in a new tab)

AI filter assistant

Lets you filter newsletters by plain-language requests Finds relevant sends quickly

Access: All plansLimit: Quality tied to tracked set source (opens in a new tab)

Subject line scoring

Auto-scores subject lines for length, emoji, uppercase, sentiment and keywords Shows what drives opens

Access: All plansLimit: Benchmarks are estimated source (opens in a new tab)

Hour by day heatmap

Plots sends on an hour by day-of-week heatmap Reveals the best send time

Access: All plansLimit: Needs enough tracked sends source (opens in a new tab)

Newsletrix: strengths and limits

Reasons to choose Newsletrix

Check before paying for Newsletrix

How to use Newsletrix for benchmarking competitor subject lines

Set up Newsletrix

  1. Create a free Newsletrix account
  2. Get your tracking email address
  3. Subscribe that address to competitor newsletters
  4. Wait for their sends to appear

Example: benchmarking competitor subject lines

  1. Open the AI competitor summary
  2. Ask the filter assistant for pricing newsletters this week with high opens
  3. Open the subject line scoring view
  4. Check the send-time heatmap for your own slot

Review and export the result

  1. Confirm your competitors appear in the tracked list
  2. Compare one subject score with its actual wording
Example prompt suggested by our editors (not a recorded output of the product)
Find newsletters about pricing sent this week with high open rates.

Newsletrix API

API access and separate billing

Newsletrix has no public API in its official documentation. None mentioned

Privacy, data use and commercial rights

Summarized from the vendor's current policies; this is not legal advice and a vendor's badge is not an independent audit.

How your inputs and outputs are handled

Processes newsletters received at your tracking email.

Not summarized.

Not summarized.

Commercial use and plan restrictions

Not stated.

Not stated.

Policies: newsletrix.com/privacy

Other tools to consider instead of Newsletrix

"Better suited" is based on documented features and pricing, not on a head-to-head test.

Perplexity: better suited to

Alternatives
AlternativeWhen to choose itPricingLimitation
Perplexity——Compare

Explore Newsletrix further

Newsletrix pricing, plan by planEvery plan with USD prices, limits and what is free.Best AI research toolsOur picks in this category, compared by price and free tiers.

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    Newsletrix FAQ

    Is Newsletrix free?

    Yes; the free plan has no card, 2 analyses per week and one tracking email. source (opens in a new tab)

    Which email platforms does it work with?

    Newsletters from Substack, Beehiiv, Mailchimp, ConvertKit, Klaviyo, SendGrid and HubSpot are shown. source (opens in a new tab)

    What is scored in a subject line?

    Length, emoji, uppercase, sentiment and keywords, benchmarked against estimated open rates. source (opens in a new tab)

    Do all plans include all features?

    Yes, plans differ by analyses per week. source (opens in a new tab)

    What do paid plans cost?

    Starter $9, Professional $29 and Business $69 monthly; a Founders offer is listed at $45. source (opens in a new tab)

    Sources and review methodology

    Official sources and verification dates

    Not verified: Analysis counts per paid plan; Founders offer terms; Docs; US availability.

    How we documented and maintain this page

    Every fact about Newsletrix above comes from the 3 official pages listed here, last compared on Oct 1, 2026; we have not run Newsletrix ourselves, so it has no editorial score. How we check and re-check pages.

    Article updated Oct 2, 2026; prices checked Oct 1, 2026. Outbound links to vendors are plain links; we do not earn commissions. How we review · Report an error